Relief-valve



Patented Mar. 7, |899.

C. F. HANSON.

RELIEF VALVE.

(Application filed Har. 29, 1898.)

(No Modal.)

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CHRISTIAN FRANK HANSON,

NITED STATES? OF LA GROSSE, VISCONSIN.

RELIEF-VALVE.

SPECIFICATION forming' part of Letters Patent No. 620,770, dated March 7,1899.

Application filed March 29, 1398.

To all whom it may concern:

Beit known that I, CHRISTIAN FRANK HAN- SON, a citizen of the United States, residing at La Crosse, in the county of La Grosse and State of lVisconsin, have invented certain new and useful Improvements in Relief-Valves; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertaius to make and use the same.

My invention relates generally to valves, and particularly to certain new and useful improvements in relief -valves for tire and other hose; and the object of the invention is to provide a simple and efiicient valve whereby the iiow of water may be cut off at any desired distance from the nozzle and the watercontained in the hose between the valve and nozzle allowed to drain off, so as to enable the firemen to carry the hose with comparative ease up ire-escapes and ladders to the top of a burning building.

A further object is to provide a valve of this class having a single oscillatory valve device governing both the flow of water through the hose and the drainage of water therefrom.

With these and other objects in view the invention consists in the novel features of construction, combination, and arrangement of parts hereinafter more fully described, and particularly pointed out in the appended claims.

In the drawings hereto annexed and forming a part of this specification,` Figure l is a side elevational view of a relief-valve constructed in accordance with my invention. Fig. 2 is an elevational view of the same. Fig. 3 is a vertical section on line 3 3 of Fig. 2. Fig. 4 is a cross-section on line44 of Fig. 3.

Referring now more particularly to the drawings, A represen ts the valve-casing, provided with the usual inlet and discharge pipe extensions B C, the latter being exteriorly threaded at d to receive the coupling-collar on the end of one hose-pipe section and the former having an internally-threaded collar E to engage the end of the adjoining hosepipe section in the usual manner. This collar is provided with the ordinary turninglugs f and with an annular ange f', which is adapted to turn freely on a sleeve G, secured to the said pipe-section B by screws g Serial No. 675,602. (No model.)

at closed end portion j, which is substantially circular in form. The opposite end of the casing is closed by a detachable head or cover-plate Z, secured thereto by screws Z or other suitable fastening devices. By detaching this plate access may conveniently be had to the casing to repair or remove the valve. The said end j and cover-plate are provided with alined openings m to allow the water to drain out between the valve and the hose-nozzle when said valve is closed to cut o the flow of water through the hose, as will be hereinafter described. These openings are arranged eccentric to the axis of the end portions of the casing, as shown in Figs. l and 2.

The valve N is almost wholly seated in or inclosed by the curved or bulged-out end portion i of the casing, and consists of a cylindrical shellprovided at each end with a trunnion o. These trunnions are journaled in the side walls of the casing and project to the exterior through openings p therein, whereby the valve is mounted to oscillate. Connected with these journals are the ends of a bailhandle Q, which is operated to open and close the valve.

The valve is provided at diametrically opposite sides, on one side of its center, with main ports 7 q', which when brought into coincidence with the pipe extensions B C form a waterway in the valve equal in area to the area of said pipe extensions. In the ends of the valve at the opposite side of its center from said ports are drain-ports r, which register with the openings m when the valve is turned to cut off the flow of water from the inlet-pipe B and allow the water contained in the hose between the valve and nozzle to drain out.

The operation of the valve is as follows: When the bail-handle is moved downward to engage the spring-catch t, the valve is turned to bring the main ports into coincidence with the inlet and discharge pipe extensions B C,

thereby allowing the water to flow through the valve. When,'however, the handle is moved upward to engage the spring-catch t',

IOO

the drain-ports r are brought into coincidence with the openings m in the ends of the casing, and the solid side q2 of the valve cuts off the flow of water from the inlet-pipe B. When Y this is done, the port q faces the curved end wall fi', while the port q' is in line with the discharge-pipe extension C. The water contained in the forward hose-section then flows back from the nozzle and discharges through the openings fm. The spring-catches hold the bailhandle rmly against disengagement when the hose is dragged, and thereby prevent casual turning of the valve.

` From the above description, taken in connection with the accompanying drawings, the construction and mode of operation of my improved relief-*valve will be readily understood. This valve is particularly designed for use on fire-hose, but may be .advantageously employed on hose, steam, or water pipes of any kind in which it is at times desirable to allow the water to escape when the nozzle-valve is shut olf. In fires in large buildings itis frequently found necessary to carry the hose up high fire-escapes and ladders, a difficult and dangerous operation when the hose is filled with water. By my invention the flow of water may be cut off and the forward section of the hose quickly relieved of the weight of the water, thereby enabling it to be readily and conveniently lifted and handled.

It will be understood that changes in the form, proportion, and minor details of construction may be made Within the scope of the invention without departing from the spirit or sacrificing any of the advantages thereof.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

l. In a relief-valve for lire and other hose, the combination of a casing provided with inlet and discharge pipe extensions and drainopenings, and a single oscillatory valve controlling the flow of water through said exten= sions and openings, said valve being mounted eccentric to the bore of the extensions and provided at diametrically opposite sides on one side of its center with main ports adapted to be brought in register with the extensions and in its ends on the opposite side of its center with drain-ports which register with said drain-openings when the valve is turned to cut off the iiow of water through the inleta pipe extension, substantially as described.

2. In a relief-valve for fire and other hose, the combination of a casing provided with in= let and discharge pipe extensions, end walls having drain-openin gs and a curved or bulged out side wall forming a chamber arranged eccentric to the bore of said extensions, and an oscillatory valve mounted in said chamber, said valve being provided at diametrically opposite sides on one side of its center with main ports q q and in its ends on the opposite-side of its center with drainports fr, all constructed, arranged and operating, substantially as described.

3. In a relief-valve for fire and other hose, the combination of a casing provided with inlet and discharge pipe extensions, end walls havingdrain-openings and a curved orbulgedout side wall forming a chamber arranged eccentric to the bore of said extensions, an oscillatory valve mounted in said chamber, said valve being provided at diametrically opposite sides on one side of its center with main ports q q' and in its ends on the opposite side of its center with drain-ports r, and a bailhandle connected to the outwardly-project ing trunnions of said valve, substantially as described.

In testimony whereof I aihx my signature in presence of two witnesses.

CHRISTIAN FRANK IIANSON.

Vitnesses:

JOHN J. EsCH, FRANK WINTER. 

